yu said the north is also working to improve the reliability of its missile technology. >>> a highway operator in tokyo area has discovered a potential maintenance problem in one of its road tunnels near haneda airport. inspections by the metropolitan expressway company found one of the large rods used to hold up the tunnel's ceiling was broken. the emergency check comes three days after an expressway tunnel ceiling collapsed in yamanashi prefecture near tokyo, killing nine people. the company said the suspended ceilings are used at two locations on both the inbound and outbound lanes of the 300-meter tunnel. the company says the rod had not been changed since it was installed in 1964, adding that no problems were found during previous inspections conducted every five years. it says it has now fixed the ceiling where the broken rod had been found using wires. it plans to get rid of the ceilings entirely by the end of this year. >>> the new leader of the chinese communist party is sending out mixed signals. xi jinping says he wants to pursue a peaceful foreign policy. at the same time,